Pattern-lifter



(No Model.) W. J. INNIS & P. H. KANE.

PATTERN LIFTER. No. 252,382. Patented Jan. 17,1882.

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. ITED STATES PATENT OFF CE.

WILLIAM J. INNIS Al\ D PATRICK H. KANE, OF OIL CITY, PENNSYLVANIA.

PATTERN-LIFTER.

. SPECIFICATION forming part of Letters Patent No. 252,382, dated January 17, 1882.

Application filed July 14, 1881. (No model.)

To all whom it may concern Be it known that we, WILLI M J. INNIS and PATRICK H. KANE, of Oil City, in the county of Venango and State of Pennsylvania, have invented certain new and useful Improvements in Pattern-Lifters; and we do hereby declare that the following is a'full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in tools for withdrawing patterns of castings from the mold after said mold has been formed.

Heretofore patterns have been lifted out of the sand of the mold with hand-screws partly entering the wood of the pattern or threaded plate fixed in the pattern. Small plates have been attached to the'pattern, having a central ro'undhole beveled on the under side to receive the ends of a forked handle, these ends being so formed as to be pressed apart by a pointed screw, forming a part of the tool, and made to engage partly under the beveled edges of the opening in the center of the plates.

The objects of our improvement are to produce a simple tool in connection with a toolreceiver adapted to be secured to a pattern to lift the latter from the mold with uniform safety.

The invention will first be described in connection with the drawings and then pointed outin the claims.

In the drawings, Figure 1 represents a perspective view of the pattern-liftin g tool. Fig.

2 represents a perspective view of the toolreceiver.

Fig. 3 is a vertical section through the lower end of the tool audits receiver. Fig. 4 is a plan view of the tool-receiversecured to a portion of a pattern.

In said drawings, A represents a handle made of a piece of stout wire or small rod bentat one end to form an open ring, A, and provided with a screw-thread, a, out upon its opposite 'end, to engage with a trapezoidal head or nut, I), having two or more of its faces, I),

beveled, so that when ready for use it will be The head I) may be permanently secured by riveting to the extremity of the handle; but weprefer to connect the two by a screw-thread, to cause said head to act as a jam-nut and give stability to the handle'when connected with its receiver, as will be hereinafter explained. This tool-receiver G is a light casting, having made in its upper face a recess, 0, extending half the length of said casting, and of such size cured thereto with'a couple of screws passing through the bottom of the receiver.

The recesses c, a can be temporarily closed with a rectangular plug before the cope or up per part of the flask is placed in position.

If the pattern is not thick enough to admit the receiver 0 it can be fastened on the top, and in such case the rectangular recess 0 can be omitted.

After the sand has received the impression of the pattern the plug is taken out and the pattern removed with the handle A by inserting the dovetailed head or nut 11 thereofin the recess a and sliding it within the dovetailed recess 0; and if the lower end of said handle is screw-threaded, and the head or nut b is suitably tapped, by turning said handle it will jam the dovetailed or beveted nut up against the dovetailed recess and form a peri'ectly rigid connection between the handle and its receiver, and consequently with the pattern.

In case the pattern is of iron, the recess can be cast in the pattern; orif the pattern is not thick enough for the purpose, small ribs with a proper dovetail can be cast on the top of the pattern.

We claim as our invention- 1. A pattern-lifter composed of a handle formed of a screw-threaded single stem, in combination with a beveled nut having its lower face wider than its top, substantially as and for the purpose described.

2. The combination of a pattern-lifter handle having at its lowerend a beveled head or nut with a receiver havingan internal recess formed with rectangular sides a portion of its length 5 and beveled sides or a dovetailed opening the balance of its length, substantially as and for the purposes set forth.

3. Ribs upon a pattern with an interior dovetail, in combination with a beveled nut upon 10 a screw-threaded stem or handle, for the purpose of lifting the pattern from the sand, substantially as described.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.

WILLIAM J. INNIS.

PATRICK H. KANE.

Witnesses:

HIRAM D. HANCOCK, GEORGE H. MOUHERD. 

